Both models have improved autofocus ability, particularly in low and tungsten light, down to â'3EV, which at the time of release makes it the best low-light autofocus camera. Also improved is the sensitivity of the central AF area which now has an AF base of f/2.8 instead of the common f/5.6. This increased AF base length helps to improve focus accuracy, in particular with fast (wide aperture) lenses and in low light.

Externally, the cameras are distinguished by a recessed screen, where the K-5 had a flush-mounted one. The K-5II/IIs has a gapless designâ"the typical air gap is avoided by the use of a special resinâ"helps to reduce internal reflections and gives better visibility in bright light. The material of the screen has been changed from plastic to tempered glass, which is scratch resistant. Like its predecessor, the K-5 II/IIs is fully weather-sealed.

It has the highest camera sensor rating of any Pentax camera, according to DxO Labs, with a score of 82.

Bundling

The K-5 II/IIs are available in two different kits, one including the DA 18â"55Â mm WR lens, and the other the DA 18â"135Â mm WR lens, as well as a body only.